- if /usr/include/GL is found then freeglut is tried
- else w32api native GLUT is tried.
- you must uninstall freeglut and its devel packages to use native GLUT
git-svn-id: https://svn.parrot.org/parrot/trunk@37202 d31e2699-5ff4-0310-a27c-f18f2fbe73fe